Question

urgent cine stie scrie aici trb sa fie detaliat mss❤❤​

Answer 1

a) descompui prin a^2-b^2: (x+7-1)(x+7+1)=(x+6)(x+8)
b) tot aceeași metoda a^2-b^2: (3-x+6)(3+x+6)=(9-x)(9+x)
c) tot prin a^2-b^2: (2x-1-5x)(2x-1+5x)=(-1-3x)(-1+7x)